Finding the Fourth Proportional to 135,444.20, 186,924.66 and 78,860.84
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Solution
The fourth proportional to 135,444.20, 186,924.66 and 78,860.84 is: 108,834.75
Step by Step Solution
- Step 1: Write the proportion equation
135,444.20 : 186,924.66 = 78,860.84 : x - Step 2: Convert to fraction form
135,444.20/186,924.66 = 78,860.84/x - Step 3: Cross multiply
135,444.20x = 186,924.66 × 78,860.84 - Step 4: Simplify right side
135,444.20x = 14,741,035,704.31 - Step 5: Solve for x
x = 14,741,035,704.31/135,444.20 - Step 6: Final answer
x = 108,834.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.